def single_rotation(M,Z,L,index=0):
theta = []
phi = []
sides = Z.shape[1]/M.shape[1]
v1 = points.vector(M[:,index],Z[:,index*sides],L)
spher = xyz_to_spherical(v1)
theta = spher[:,1]
phi = spher[:,2]
return theta, phi
def rotations(M,Z,L,sides=6):
theta = []
phi = []
zrange = range(0,Z.shape[0],sides)
for i in range(M.shape[0]):
v1 = points.vector(M[k],Z[k],L)
spher = xyz_to_spherical(v1)
theta.append(spher[1])
phi.append(spher[2])
return theta,phi
